<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>图片切换</title>
</head>

<body>
    <div id="mask">
        <img :src="imgArr[index]" alt="">
        <a href="javascript:void(0)" v-show="index!=0" @click="prev">上一张</a>
        <a href="javascript:void(0)" v-show="index<imgArr.length-1" @click="next">下一张</a>
    </div>
    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
</body>
<script>
    var app = new Vue({
        el: "#mask",
        data: {
            imgArr: [
                "./images/banner.jpg",
                "./images/banner1.jpg",
                "./images/banner2.jpg"
            ],
            index: 0
        },
        methods: {
            prev: function () {
                this.index--;
            },
            next: function () {
                this.index++;
            }
        }
    })
</script>

</html>